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    Effects of planting date, cultivar and insecticide spray application for the management of insect pests of cowpea in northern Ghana

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    S17ArtAbudulaiEffectsInthomDev.pdf (704.1Kb)
    Date
    2017-10
    Author
    Abudulai, M.
    Kusi, F.
    Seini, S.S.
    Seidu, A.
    Nboyine, J.A.
    Larbi, Asamoah
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Insect pests are a major constraint to cowpea production in northern Ghana where it is widely cultivated. Field experiments were conducted to evaluate the effects of planting date, cultivar and insecticide applications for the management of major insect pests attacking cowpea. There were 4 planting dates, 6 cowpea cultivars of medium maturity periods and 2 insecticide spraying regimes. Data were collected on densities of the major insect pests, including the legume pod borer Maruca vitrata F., thrips Megalurothrips sjostedti Trybom, and the pod-sucking bug complex dominated by Clavigalla tomentosicollis Stal., and grain yield. Early planting of cowpea in mid- or late July resulted in the lowest pest densities compared with those planted at later dates. Two of the six cowpea varieties (IT99-573-2-1 and IT99-573-1-1) supported the lowest numbers of insects across planting dates and irrespective of insecticide spraying regime. However, insecticide sprays significantly lowered pest densities and improved yields in all varieties, and yields were the highest when treatments were combined with early planting in mid-July. The results suggest that for maximum yield, cowpea in the study area should be planted in mid-to-late July and sprayed with insecticide. Where available, these treatments can also be integrated with varieties such as IT99K-573-2-1 and IT99k-573-1-1 which appeared to be less susceptible to insects in the current study.
    http://dx.doi.org/10.1016/j.cropro.2017.07.005
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2002
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1016/j.cropro.2017.07.005
    IITA Subjects
    Cowpea; Grain Legumes; Pests Of Plants
    Agrovoc Terms
    Cowpeas; Vigna Unguiculata; Insect Pests; Planting Date; Insecticide Sprays; Cultivars
    Regions
    Africa; West Africa
    Countries
    Ghana
    Journals
    Crop Protection
    Collections
    • Journal and Journal Articles5283
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